Micom p591 manual

MiCOM allows you to define an application solution and integrate it with your power supply IT control system with extensive communication capabilities. The components within the MiCOM range are:. MiCOM products include extensive facilities for recording information on the state and behavior of the power system using disturbance and fault records. At regular intervals they can provide measurements of the system to a control center, allowing remote monitoring and control.

For up-to-date information on any MiCOM product, visit our website: www. The P, P and P interface units allow the relays to be connected to remote multiplexing equipment or other communication network equipment. The interface units are usually located close to the PCM multiplexer and provide signal conversion between the relay and the PCM multiplexer.

The communication connections of the devices are shown in Figure 1. P P P interface unit interface unit interface unit. Hardware Options 64 kbps 1. Setting Files Standard - Not Applicable 0. Ambient humidity range Weight Per EN 1. Creepage distances and clearances Case protective earth connection EN Ground tag, M4 hole.

Pollution degree 3, Must be earthed grounded for safety, Overvoltage category III, minimum earth wire size 2. Impulse test voltage 5 kV. Between all independent circuits. Between independent circuits and protective Typical Tx output level: dBm launched into earth conductor terminal. Optical budget 0 to 8 dBm Between all independent circuits and Ratings protective earth conductor terminal.

Between the terminals of independent circuits. Burden: 4. Class IV. Applied directly to auxiliary supply and communications port. Product Specific Standards MHz and 1. LVD is demonstrated pulsed modulated. Compliance demonstrated by compliance to Radiated immunity from digital radio both the EMC directive and the Low voltage telephones directive, down to zero volts. Per EN Applicable to rear communications ports.

The relay and the P, P or P unit can be up to 1 km apart, connected by nm multi-mode fiber cables. They all use differential signalling over twisted pairs. Twisted pair cabling twists together the forward and return conductors of a single circuit. This cancels out electromagnetic interference such as noise, interference from Unshielded Twisted Pair UTP cables, and crosstalk between unshielded neighbouring pairs.

It is recommended to use Braided Shielded Twisted Pairs because they give better noise immunity and better mechanical strength compared to foils. It is called co-directional because the data and timing are sent in the same direction over the same wires. Between two devices, connections A connect to A, and B connect to B.

The DCE is normally a multiplexer or modem. Hardware handshaking is done by the Control and Indication lines. The unit is housed in a size 10TE case and should be located near to the multiplexer. The front panel has three LEDs to show the status of the unit. POWER is green and shows that the unit is correctly powered. Opto Loopback is red if there is a communication loopback condition.

Check for a break in the communications path between the two current differential relays. This switch breaks the signal path between the optical received data and the optical transmitted data. The Opto Loopback switch also connects the signal from the optical receiver back to the optical transmitter, allowing the communication signal from the local current differential relay to be looped back for system testing.

The G. The red G. Note: The pin connector is disabled. The P connected to the fiber optic link must use the same timing for the transmit and receive signal. The data bit is read on the clock rising edge. It allows a digital current differential relay to be connected through optical cables to a remote telecommunications multiplexing equipment that has an ITU-T V. The front panel has five LEDs to show the status of the unit.

There are also six switches on the front panel. This switch breaks the signal path between the optical received data and the V.

The V. The red V. Switches between the two modes. Data Terminal Equipment DTE is typically a user interface to a network such as a terminal or computer. This should only be enabled if the multiplexer or modem is not providing the DSR signal.

Switches between the two data rates. Note: The G. It allows a digital current differential protection relay, which has a fiber-optic communication interface, to be connected over digital communication links, conforming to the ITU-T recommendation X. The front panel has four LEDs to show the status of the unit.

There are also two switches on the front panel. This switch breaks the signal path between the optical received data and the X. The X. The red X. The Signal Element Timing input to P on pins 6 and 13 is used to clock both the transmit data and the receive data. Ensure that the end-to-end polarity is consistent for the Signal Element Timing, Receive and Transmit lines.

Unless previously agreed to the contrary, the customer is responsible for determining the application specific switch settings to be applied to the unit. Blank commissioning test and setting records are provided at the end of this chapter for completion as required. It may not be necessary to perform all output tests, depending on the application for which the P59x is used.

If the application-specific switch settings have been applied to the unit before commissioning, make a copy of the settings so they can be restored later. This is done by manually creating a setting record, using the copy at the end of this chapter. Ensure that the circuit reference and system details are entered onto the setting record sheet.

Carefully examine the unit to see that no physical damage has occurred since installation. CM Ensure that the case earth ground connection, at the top of the rear of the case, is used to connect the unit to a local earthing bar using an adequate conductor. Isolate all wiring from the earth and test the insulation with an electronic or brushless insulation tester at a dc voltage not exceeding V.

The auxiliary dc supply terminals should be temporarily connected together. On completion of the insulation resistance tests, ensure that all external wiring is correctly reconnected to the P59x. The incoming voltage must be within the operating range specified in Table 1. Without energizing the unit, measure the auxiliary supply to ensure it is within the operating range. However, in all cases the peak value of the dc supply must not exceed the maximum specified operating limit.

Energize the P59x only if the auxiliary supply is within the specified operating ranges. If a P test block is provided, it may be necessary to link across the front of the test plug to connect the auxiliary supply to the P59x. See Figure 1. Once operation of the LEDs has been established, set all front panel switches to Disable.

Remove any external wiring from the G. Loopback the G. See Figure 3. To measure and record the optical signal strength received by the P, disconnect the optical fiber from the receive port on the rear of the unit and connect it to an optical power meter. The mean level should be from dBm to dBm. If the mean level is outside this range, check the size and type of fiber used. The mean value should be from dBm. Ensure that the transmit Tx and receive Rx optical fibers between the P54x relay and P unit are connected.

See Figure 2. The relay then responds as if it is connected to a remote relay with the current at the remote end equal to and in phase with the current injected at the local end no currents in the case of fiber InterMiCOM Reset alarm indications. The relay then indicates a loopback alarm which can only be cleared by setting the loopback to Disabled.

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Energy and sustainability services First, envision an energy-efficient, cost-effective and sustainable enterprise. Check synchronizing. Negative sequence overcurrent. Thermal overload. Ground fault. Phase overcurrent. Circuit breaker failure. Wattmetric ground fault. Ground fault directional. Sensitive directional ground fault. Phase directional. Power swing blocking. Line differential terminal.

Phase comparison.